SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 446
   NWS STORM PREDICTION CENTER NORMAN OK
   810 PM CDT THU JUN 9 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHWEST IOWA
          NORTHEAST KANSAS
          EXTREME NORTHWEST MISSOURI
          SOUTHEAST NEBRASKA
   
   EFFECTIVE THIS THURSDAY NIGHT FROM 810 PM UNTIL MIDNIGHT CDT.
   
   HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
   STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES WEST NORTHWEST
   OF OMAHA NEBRASKA TO 40 MILES SOUTHWEST OF FALLS CITY NEBRASKA. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
   PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
   WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
   WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
   TORNADOES.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 442...WW 443...WW 444...WW
   445...
   
   DISCUSSION...SQUALL LINE WITH EMBEDDED SUPERCELLS/BOW NOW SE OF HSI
   EXPECTED TO CONTINUE MAINLY ENE THROUGH LATER THIS EVENING.  WHILE
   DOWNSTREAM AIR MASS ACROSS FAR SE NEB WAS OVERTURNED EARLIER
   TODAY...REGION HAS SOMEWHAT RECOVERED AND MAY SUPPORT CONTINUED
   FORWARD PROPAGATION OF MCS AND ASSOCIATED HIGH WIND
   THREAT...ESPECIALLY CONSIDERING DRY/DEEP MIXED ENVIRONMENT SHOWN ON
   00Z OMAHA RAOB.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
   MOTION VECTOR 24030.
   
   
   ...CORFIDI